On right-handed b decay dominance
Journal
Physics Letters B
Journal Volume
256
Journal Issue
2
Pages
364-370
Date Issued
1991
Author(s)
Daniel Wyler
Abstract
In the Gronau-Wakaizumi scenario of right-handed b decay dominance, VcdR is vanishingly small while large VtdR and VtsR lead to potential problems with the KL-KS mass difference. Allowing the b → u transition to be dominantly left-handed, we arrive at a more symmetric form of quark mixing matrices, where VL, VR are constituted mostly of mixing between first and second, and second and third generations, respectively. A third possibility of having b → c left-handed as usual, but b → u dominantly right-handed, is ruled out by the ε{lunate} parameter and Bd mixing. Experimental consequences such as Cabibbo suppressed decays, penguin rates, and CP violation, are discussed. The best way to rule out right-handed b → c decay dominance is to find B → D(*)D-(*) modes at the 0.1% level. © 1992.
SDGs
Type
journal article